<template>
  <div class="login-container">
    <div class="login-box">

      <!-- 头像区域 -->
      <div class="text-center avatar-box">
        <img src="../assets/logo.png" class="img-thumbnail avatar" alt="">
      </div>

      <!-- 表单区域 -->
      <div class="form-login p-4">
        <!-- 登录名称 -->
        <div class="form-group form-inline">
          <label for="username">登录名称</label>
          <input type="text" class="form-control ml-2" id="username" placeholder="请输入登录名称" autocomplete="off"
            v-model.trim="username">
        </div>
        <!-- 登录密码 -->
        <div class="form-group form-inline">
          <label for="password">登录密码</label>
          <input type="password" class="form-control ml-2" id="password" placeholder="请输入登录密码" v-model.trim="password">
        </div>
        <!-- 登录和重置按钮 -->
        <div class="form-group form-inline d-flex justify-content-end">
          <button type="button" class="btn btn-secondary mr-2" @click="reset">重置</button>
          <button type="button" class="btn btn-primary" @click="login">登录</button>
        </div>
      </div>

    </div>
  </div>
</template>

<script>
export default {
  name: 'MyLogin',
  data() {
    return {
      username: 'admin',
      password: '666666',
    }
  },
  methods: {

    /**
     * 重置用户名和密码字段
     */
    reset() {
      this.username = '';
      this.password = '';
    },

    /**
    * 登录函数
    */
    login() {
      // 检查用户名和密码是否正确
      if (this.username === 'admin' && this.password === '666666') {
        // 登录成功，输出登录成功信息到控制台
        console.log('登录成功');
        // 1.将登录凭证（token）存储到本地存储
        localStorage.setItem('token', 'Bearer XXXX');
        // 2.使用Vue Router重定向到主页
        this.$router.push('/home');
      }
      // 登录失败
      else {
        console.log('登录失败');
        // 从本地存储中移除登录凭证（token）
        localStorage.removeItem('token');
      }
    }
  }
}
</script>

<style lang="less" scoped>
.login-container {
  background-color: #35495e;
  height: 100%;

  .login-box {
    width: 400px;
    height: 250px;
    background-color: #fff;
    border-radius: 3px;
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    box-shadow: 0 0 6px rgba(255, 255, 255, 0.5);

    .form-login {
      position: absolute;
      bottom: 0;
      left: 0;
      width: 100%;
      box-sizing: border-box;
    }
  }
}

.form-control {
  flex: 1;
}

.avatar-box {
  position: absolute;
  width: 100%;
  top: -65px;
  left: 0;

  .avatar {
    width: 120px;
    height: 120px;
    border-radius: 50% !important;
    box-shadow: 0 0 6px #efefef;
  }
}
</style>